Method for detecting a reference position and displacement detec

Details Method for detecting a reference position and displacement detec Method for detecting a reference position and displacement detec

1994-01-25

1996-04-09

Rosenberger, Richard A.

Optics: measuring and testing

By polarized light examination

With light attenuation

250237G, G01B 1114

Patent

active

055066810

ABSTRACT:
A displacement detector includes a light generation source for generating light, a scale to be irradiated by the generated light and displaceable relative to the irradiated light, a first detection device having a photo-sensing element for detecting light transmitted through the scale for detecting displacement information of the scale, a mark having a focusing or light-condensing function formed integrally with the scale, and a second detection device having a photo-sensing element for sensing the light-condensed by the mark for detecting a reference position of the scale.

REFERENCES:
patent: 3763372 (1973-10-01), Fedotowsky et al.
patent: 4097734 (1978-06-01), Erickson
patent: 4263506 (1981-04-01), Epstein
patent: 4477189 (1984-10-01), Ernst
patent: 4758720 (1988-07-01), Aubele et al.
patent: 5026985 (1991-06-01), Ishizuka et al.
patent: 5059791 (1991-10-01), Ishizuka et al.
patent: 5129725 (1992-07-01), Ishizuka et al.

Affiliated with

Also associated with

Rating

Method for detecting a reference position and displacement detec does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for detecting a reference position and displacement detec, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting a reference position and displacement detec will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-142521